HRW HPD0460MR V402 Manual 150622.docx E. & O. E. / Subject to change without notice
Page 4 of 32
Operation Overview
All physical inputs, outputs and internal logic & control function blocks, and critical control loop
parameters are numerically represented as a ‘point’. The point is a function block’s output value.
Depending on the purpose of a function block the point may have a range of sub-parameters available
for defining the block’s function and the operational features & limitations of the function. In the case of
control loops the active set point, the proportional band and the integral time sub-parameters are also
represented as points for network access and remote tuning of a control loop if required.
The process of setting up function blocks and connecting function blocks to form an application uses
simple text lines therefore it is not necessary to learn a complex programming language. The settings
may be manually typed in to the device or, using the
FUNCPROG 141101
programming tool which
provides a visual representation of each block, an application text file may be created, saved and
downloaded to the device as a complete group of settings.
The ability to make single setting changes directly at the device makes for easy debugging and
commissioning.
The function blocks comprise:
Physical I/O for connection of input switches, sensors and output control devices
Virtual inputs for taking over external commands and values from other network devices or for
manual settings and overrides
Logic blocks for event based reactions and influences
PI Control Loop blocks for set point based control reactions
Network settings
In all cases points may be manually overridden for testing & commissioning purposes or for service
override.
Connection to the device for programming and service is via a terminal program such as HyperTerminal
(recommended). While on-line to the device it is possible to view point statuses and where applicable,
any dependent or influencing point’s connections. Statuses are updated live to the terminal screen
every 10 seconds or manually refreshed any time by pressing the enter key.
In additional to the predefined point displays a user-defined display is available for a customised point
summary related to an application. The user display may contain up to 32 lines of user text with or
without dynamic points included.
In the base HPD0460MR version which is without PI controller or time clock functions, the physical
inputs may be read from other controllers on the network and the outputs may be driven by other
controllers on the network. This means the HPD0460P1 may be used as a user interface to multiple
controllers in a system utilising the field panel as the router.
The HPD0460MRC, T and CT versions feature control and/or logic and/or time-switching capabilities
which enable them to work as controllers in their own right, either locally or providing control to remote
controllers and I/O expansion devices via the field panel. Note that the time switch function blocks
utilise points 101…104 therefore they must be connected to other function blocks such as Digital Logic
blocks for their status to be read by a field panel which may only read or command points from 1…99.
In all versions the user has the freedom to specify own display text in up to 32 lines with or without
dynamic object displays. Text lines may be programmed to be invisible until a specific point (or group of
points) met a predefined criteria at which time the text will ‘pop-up’ at the top of the display. When the
predefined criteria is no longer true then the text will no longer be displayed. This feature is designed for
use as alarm indication and can be used together with the programmable LED’s and audible beeper to
raise attention to an alarm situation.
